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appending text to a file

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# 1  
Old 02-01-2012
Question appending text to a file
I am trying to count number of record in a file and then append a trailer to that file.

Trailer should e in the format as below
T| <count of records>

count of records ---> this count should be one less than the actual count obtained, as the file will have a header.

I have drafted a script as below

count = wc - l $fn ---> $fn will provide the file name
count = $count - 1 ---> actual count - 1

I don't know how to create the trailer with the count. Please help me out.

Thanks in advance.
# 2  
Old 02-01-2012
Code:
count=`wc -l $fn | awk '{print $1-1}'`
echo "T|$count" >> $fn

Guru.
Last edited by guruprasadpr; 02-01-2012 at 02:37 AM..
This User Gave Thanks to guruprasadpr For This Post:
siteregsam
# 3  
Old 02-01-2012
Hi,
you can append to the file in the following format

Code:
 echo "T|$count " >>$fn.txt

incase if it needs to printed in new line

Code:
echo -e "\n T|$count " >> $fn.txt

thanks,
venkat
This User Gave Thanks to venkatareddy For This Post:
siteregsam
# 4  
Old 02-01-2012
Lets say, you have some set of files ending with .dat and u want to create the Trailer like T|$(count-1)

So,

Code:
for fn in *.dat
do
awk 'END{print "T| " NR-1}' ${fn} >> ${fn}

done

This User Gave Thanks to knight_eon For This Post:
siteregsam
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